I want to install a solar tube to bring light to a room with no windows.
There are sadly no standards to be able to compare products in the market. I would expect a "lumens" spec that lets you compare light output of one product to another, like they have for LED lights for example.
Given such data doesn't exists, could anyone recommend (based on lumens and other features) between: 1. solatube 2. velux 3. whatever this is (sold via costco)
One thing I know is that I want frosted glass/plastic on the inside. I noticed velux has a huge dome vs solatube being a small dome, and the costco thing being not a dome at all... thoughts?